Wyss core faculty member L. Mahadevan will give a set of four lectures that will provide a brief (and biased) introduction to some questions about the geometry of the brain and geometry in the brain. How can one describe these features quantitatively? How can one understand their origin? How might we compare brains from different organisms in a species and across different species? How can we characterize the patterns associated with sensory modalities in different cortii? And what is the current state of answers to these and related questions.